What is the difference between PLC and PLC programming?

PLC: Programmable Logic Controller (Programmable Logic Controller) is a control device with stable performance, such as a common elevator in life, and its controller is PLC

PLC programming: As the name suggests, PLC is a controller, and what kind of function it wants to achieve is to input a programming language for it to execute. Commonly used PLC programming languages include ladder diagrams and instruction lists.

The difference is that PLC is a controller and an object, PLC programming is a technology and a programming language, and what we need to do is to use PLC programming technology to control PLC.

To take the simplest analogy, the traffic lights we often see on the road are controlled by PLC, and to control with PLC, you have to write the programming language to let PLC execute, which is PLC programming.

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The programming language of PLC from different manufacturers is generally different. The mainstream ones are Siemens and Mitsubishi.

The programming language of different manufacturers and different models of PLC can only adapt to their own products. There are five programming languages in the PLC programming language standard in IEC: Sequential Function Diagram Programming Language, Ladder Diagram Programming Language, Function Block Diagram Programming Language, Instruction Statement Table Programming Language, and Structured Text Programming Language.

Ladder programming language.

The language is customarily called a ladder chart. The ladder diagram follows the form of the relay control circuit, and it can also be said that the ladder programming language is a simplified symbol evolution on the basis of the relays and contactors commonly used in the electrical control system, which is image, intuitive and practical, and is easy to accept by electrical technicians, and is a PLC programming language that is currently used the most.

Ladder programming format.

1) The ladder diagram is written from top to bottom in rows, and each line is written in order from left to right. The order in which the PLC program is executed is the same as the order in which the ladder diagram is written.

2) The vertical lines on the left and right sides of the figure are called the start bus and the end bus. Each logic line must be drawn from the start bus and end with the relay coil or termination bus (some PLC termination buses can be omitted).

3) There must be a contact between the starting bus and the coil in the ladder diagram, and there must be no contact between the coil and the end bus.

Generally, the programmable controller program design is the same: ladder diagram empirical design method, sequential control method and sequential function diagram.

PLC programming is an electronic system for digital computing operations, designed for applications in industrial environments. It uses programmable memory, which stores instructions for performing operations such as logic operations, sequence control, timing, counting, and arithmetic operations.

PLC programming has a wide range of applications, powerful functions and easy to use. It has become a major component of modern industrial automation. It has been widely used in various fields of industrial production and has been applied to other fields such as civil and home automation.

The popularization and application of PLC programming has developed rapidly in China. It has been widely used in various mechanical equipment and electrical control devices. A large number of applications of PLC conversion equipment are also appearing in various industries.

Understanding the working principle of PLC and having the ability to design, debug and maintain PLC control systems has become a basic requirement for electrical technicians.

The first material expansion of the bank: due to the PLC's periodic cyclic bridge sweeping belt plexus tracing working mode, the length of the corresponding time is related to the time of receiving the input signal. The corresponding time is divided into the shortest and the longest.

A PLC is an electronic device designed for digital operation in an industrial environment. It uses programmable memory to store instructions for performing operations such as logical operations, sequential operations, timing, counting and arithmetic operations, and can control various types of machinery or production processes through digital or analog inputs and outputs. Both the PLC and its related peripherals should be designed according to the principle that it is easy to form a whole with the industrial control system and easily expand its functions.

There are ladder diagrams, etc., and the names of knowledge commands are different, but the functions are the same.

The idea of PLC programming and the mechanism of PLC scanning are the same. However, the instructions used in PLC programming of different brands will be somewhat different, but as long as you can understand one, you can do it, and the others are all bypassed.

It's all different.

A PLC is a programming language.

It depends on what you want to learn.

I learned 2 mainstream Siemens and Mitsubishi's.

There are also National Taiwan University, Omron, Schneider, and so on.

The idea of PLC programming is basically the same, it is recommended that you learn one first, learn to be proficient, and learn something else, which is also very easy to learn!

Still have questions?

The full name of PLC in English is Programmable

logiccontroller

The full name in Chinese is Programmable Logic Controller, which is defined as: an electronic system operated by digital operations, designed for applications in industrial environments. It uses a class of programmable memory to store programs inside it, execute user-oriented instructions such as logic operations, sequence control, timing, counting and arithmetic operations, and control various types of machinery or production processes through digital or analog inputs and outputs.

PLC is a programmable logic circuit, and it is also a language that is very closely combined with hardware, and has a very important application in semiconductors